Washing-machine



0. F. -HSCH'EDICK AN' A. w'. KHAHN.

WASHING MACHINE. APPLICATloN FILED 001.15191?.

Patented June 28,' 1921.

2 SHEETS-SHEET l.

0. F. FISCHEDI'CK AND A. W. KRAHN.

WASHING MACHINE. APPLICATION FILED OCT. 15. 1917.

Patented June 28, 1921.

gkwemtoz vmon and ALVIN W. KnAHN, citizens ofy the. United States, residing at Milwaukee,

Nnarran :i'rzirias oscAn F'. Fisciinnicx AND'ALVIN' W.

"PA'rnN'rA OFFICE.

KRAHN, oF-MILWAUKE, WISCONSIN.

WASHING-MACHINE.

ieaeae.

To all whom t may concern:

Be 'it known that we, OSCAR FfFrsoHncounty of Milwaukee, and tate of VVisconsin, havelinvented new and useful Improvements in lllashing-h/Iachines, of which 4the followingis a specification.

Our invention relates to improvements in washing machines, andv'pertains especially to that class of washing machines in which thel clothes are allowed to drop from srde to side within a tilting'drum partially filled with' cleansing fluid.

The object of our invention is to provide means for applying light suction to the clothes preparatory to dropping them from one 4side of the drum-to .the other, there- ,by vpartially withdrawing water from the meshes of the vfabric andialso retaining the clothes in position until the oscillation of' the drum has carried them to a higher level. than they would otherwise attain. A fur ther object ofour invention is to provide means whereby the clothes may be sub]ected to the impact of a columnor quantity of water moving against' them from beneath immediately" after 'or simultaneously with the movement of the clothes to the lower side y of the drum after having been elevated, as above described. still further object of our invention is to provide means whereby the major portion, or atleast a large .por-

tion, of the water within the drum may follow the peripheral wall ofthe drum when the latter is oscillated, thereby relieving the drum from the strains or shocks which are l frequently found to be excessive in washing drums where the water and the clothes are 4, 4: of Fig. 3v.

allowed to drop from one side tQ the other across a shelf disposed along the= chord of' asegment of the drum. Further, our object is to simplify the construction and increase the efficiency ofwashing drums of the above mentioned type.

Figure 1 is a side elevation, vpartly in vertical section, of a washingl drum embodying' our invention.v f- Y, f

Fig, 2 isa cross sectional view ofthe same vshowing thedriving mechanism in elevation.

Fig. 3 is a plan view of the separating shelf or .partition screen. across which the' clothes are dropped during the washingoperation.`

Fig. tis a sectional view, drawn on lline Application led October 15, 1917. Serial Nc.`196,589.

Specification of Letters Patent. Patented June 28, 192L y Like parts are identified by the same reference characters throughout the several views. l

The general construction of the frame A and drum B, together with the door C through which the clothes are inserted and removed, may be assumed to be of any ordi- A nary type. `The drum B is supported from the frames.. by trunnions one at each end of the drum. Motion to oscillate the drum is derived from-a ymotor D, the shaft D of which transmits an oscillatory movement to the drum through the worm E, worm wheel E, shaft F, crank wheel F and connecting rod f. A beveled gear wheel G may be .mounted on the side of the worm wheel E in a position to transmit motion to a wringer operating shaft H through a beveled pinion H. Clutch members I and I of ordinary type maybe employed -to connect and disy connect crank wheel F for rotation with the `shaft F, crank wheel F being loose on the shaft, and clutch member I being splined thereto and shifted into and out of engagement with clutch member I"by means of a lever J.

Yithin the drum at one side vof its'axis I' we provide a partition member in the form of a shelf K, the central portion of which is provided with an undulation K parallel with the axis of the drum and depressionsl also parallel with the axis of the drum extend along each side of the upwardly curv- .ing undulation K: The portions L between fthe depressions K andthe peripheralwall The shelf or partition above described'mayA be secured in position within the drum by means of brackets M and M secured to the end wall of the drum and the under surface of the shelf respectively. The brackets M are preferably formed to slide along the un l .der surface of the shelf, and are provided with knobs or projections exposed in slots N formed in the end portions of the shelf` whereby these bracket members M" may be moved into and out of interlocking engagement with the -bracket members M l 7 the member M serving as latches.

By employing the latches' or brackets M',

' and providing means whereby they maybe poseof cleansing that portion of the drum underneath the shelf. l

In operation, the drum will be partiall filled with water', lsufficient water being pre erably used to substantially cover the shelf when the latter is in the position shown in Fig. 2, The particular amount of water is however not material, except that it is de* sirable that the drum be not filled more than half full of water.

The clothes and also the water, if desired, may be insertedin the drum through the doorway, after which the door C will be closed and the motor started to oscillate the drum upon its trunnions l). f hen the drum `oscillates'in one direction the clothes will drop upon the screen L near one margin of the partition or shelf, and when the drum oscillates in the other direction these clothes will belifted by the shlf until the inclination becomes such as to cause them to drop across the shelf toand upon the screen near the other margin thereof.

The clothes, if present in the drum in normal quantity, tend to cover the screen L and prevent free passage of water and air into the space beneath the shelf on the upwardly moving side. This space, however, is full of water, or substantially full of water, when the drum is in the position indicated in Fig.' 2, and the weight of this water tends to cause it to ass 4through the screen L onthe downwardly moving side of the drum, thereby creating a light suction which draws water, "and eventually air, through the clothes on the upwardly moving side. This suction, although light and insufficient to .prevent the clothes from dropping as the drum approaches the limit of its oscillatory movement, is, nevertheless, very effective -in removing the dirt from' the fabric, since the water entrained in the fiber of the fabric is in direct contact with the dirt and carries the dirt with it when thus withdrawn by suction from the fabric.

When the clothes are carried to.` a sufficient elevation to allow their weight to cause them to drop from the screen on ,the upwardly vmoving side, they will, of course,

l pass downwardly to the screen on the lower side and in dropping will strike upon the undulation K.- The impact of the clothes upon this undulationis also effective 'in dislodging particles of foreignmatter fromthe fabric.

The clothes received upon the lower screen L will not only be churnedin the water,

other. This movement of thewater through the clothes thereforenot only operates to carry the dirt away from the fiber, but to separate the pieces of fabric in such a manner'that the particles of foreign matter may be easily dislodged and removed from the mass of clothing `on the screen.

Owing to the fact that a largeportion of the water passesl underneath the shelf during the oscillation of the drum, it is obvi- -ous thatv the walls ofthe drum are not subjected to heavy shocks, such as would be exerted if all the water was permitted to rush across the topA of the shelf from one side of the drum tothe other. employ a lighter and cheaper structure than would otherwise,l be required, and materially -increases the durability of the drum.

We claim: 1. A cylindrical washing drum supported to oscillate about the horizontal axis of the drum, and having an interior clothes supporting partition below its axis, the central portion of which is arched and imperforate and continuous with the marginal side portions from one end of the drum to the other and the side portions of which are provided with a multitude of small openings of such number and capacity as to permit a substantially free flow of water underneath the partition from one side to the other, along the interior surface of the peripheral wall of the drum,- while preventing articles of clothing from passing to the space beneath the partition.

2.v A horizontally disposed washing drum mounted to oscillate about its axis, and having the. lower portion thereof interiorly subdivided by a partition centrally arched and imperforate along a line parallel with and below the axis of the cylinder, and having marginal portions at the respective sides of the centrally arched portion, composed of wire netting adapted to permit a substantially free flow of water underneath the par- This enables us to\ iis . posed of wire netting adapted to permit a 10 substantially free flow of water underneath the partition along the inner Surface of the peripheral wall of the drum, and also adapted to prevent clothing'from passing underneaththe partition, said partition being -detachably secured to the Wall of the drum, whereby v it may be removed to facilitate cleansing the drum, and subsequently replaced relation to eachother and to the walls of the drum. 1 f

4;. A clothes supporting element for use 1n I clothes.

and secured in position, all portions',v Vof said partition being relatively fixed in'v a tilting drum Washing machine comprising a plate having an arched'imperforate central portion and a foraminous clothes supporting portion on each side of said central portion extending for the greater part ofthe length of the plate, said portions being rela- -tively disposed so that when the plate is positioned in a drum the foraminous portions Will be on opposite sides of the axls of the drum and will alternately support the 5. The element specified in claim 4, said plate having means'thereon for detachably securing the same in fixed position Within a vwashing drum.

In testimony 'whereowe aiix our signatures 'in the presence of two witnesses.

' OSCAR F. FISCHEDICK.

ALVIN W. KRAHN. Vitnesses; l

FREDERICK W. NoL'rER, Lnvmmr'r C. WHEELER. 

